Great video as always. That screech is quite characteristic of many offices, it's a noise I hate but at the same time brings back a lot of memories.
I have 3 dot matrix printers that all function correctly but finding replacement ribbons has been infuriating for me (Star LC series). I'll get "new + sealed" items sent over, open them up and install and they're dry! Some luck with treating them, WD40 or similar, but ended up just getting frustrated. Using a 1989 HP Deskjet Plus now - can actually still buy the cartridges new from HP which include the nozzles, so I'm fitting a 2014 head/ink to a 1989 printer and I think that's pretty awesome.
Wanted - Dead or Alive - Reward $$$: Compaq Deskpro 8088 / 286 / 386 - IBM RT 6150/6151 parts - AT&T 3B2 partsVC Twitter